mirror of
https://github.com/jart/cosmopolitan.git
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39bf41f4eb
- Python static hello world now 1.8mb
- Python static fully loaded now 10mb
- Python HTTPS client now uses MbedTLS
- Python REPL now completes import stmts
- Increase stack size for Python for now
- Begin synthesizing posixpath and ntpath
- Restore Python \N{UNICODE NAME} support
- Restore Python NFKD symbol normalization
- Add optimized code path for Intel SHA-NI
- Get more Python unit tests passing faster
- Get Python help() pagination working on NT
- Python hashlib now supports MbedTLS PBKDF2
- Make memcpy/memmove/memcmp/bcmp/etc. faster
- Add Mersenne Twister and Vigna to LIBC_RAND
- Provide privileged __printf() for error code
- Fix zipos opendir() so that it reports ENOTDIR
- Add basic chmod() implementation for Windows NT
- Add Cosmo's best functions to Python cosmo module
- Pin function trace indent depth to that of caller
- Show memory diagram on invalid access in MODE=dbg
- Differentiate stack overflow on crash in MODE=dbg
- Add stb_truetype and tools for analyzing font files
- Upgrade to UNICODE 13 and reduce its binary footprint
- COMPILE.COM now logs resource usage of build commands
- Start implementing basic poll() support on bare metal
- Set getauxval(AT_EXECFN) to GetModuleFileName() on NT
- Add descriptions to strerror() in non-TINY build modes
- Add COUNTBRANCH() macro to help with micro-optimizations
- Make error / backtrace / asan / memory code more unbreakable
- Add fast perfect C implementation of μ-Law and a-Law audio codecs
- Make strtol() functions consistent with other libc implementations
- Improve Linenoise implementation (see also github.com/jart/bestline)
- COMPILE.COM now suppresses stdout/stderr of successful build commands
82 lines
3.7 KiB
C
82 lines
3.7 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/internal.h"
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#include "libc/errno.h"
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#include "libc/nt/enum/fileflagandattributes.h"
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#include "libc/nt/enum/io.h"
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#include "libc/nt/errors.h"
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#include "libc/nt/files.h"
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#include "libc/nt/runtime.h"
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#include "libc/nt/struct/win32fileattributedata.h"
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#include "libc/nt/struct/win32finddata.h"
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#include "libc/nt/synchronization.h"
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#include "libc/sysv/consts/at.h"
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static textwindows bool IsDirectorySymlink(const char16_t *path) {
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int64_t h;
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struct NtWin32FindData data;
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struct NtWin32FileAttributeData info;
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if (GetFileAttributesEx(path, 0, &info) &&
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((info.dwFileAttributes & kNtFileAttributeDirectory) &&
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(info.dwFileAttributes & kNtFileAttributeReparsePoint)) &&
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(h = FindFirstFile(path, &data)) != -1) {
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FindClose(h);
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return data.dwReserved0 == kNtIoReparseTagSymlink ||
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data.dwReserved0 == kNtIoReparseTagMountPoint;
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} else {
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return false;
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}
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}
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static textwindows int sys_rmdir_nt(const char16_t *path) {
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int e, ms;
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for (ms = 1;; ms *= 2) {
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if (RemoveDirectory(path)) return 0;
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/*
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* Files can linger, for absolutely no reason.
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* Possibly some Windows Defender bug on Win7.
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* Sleep for up to one second w/ expo backoff.
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* Alternative is use Microsoft internal APIs.
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* Never could have imagined it'd be this bad.
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*/
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if ((e = GetLastError()) == kNtErrorDirNotEmpty && ms <= 512) {
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Sleep(ms);
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continue;
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} else {
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break;
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}
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}
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errno = e;
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return -1;
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}
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static textwindows int sys_unlink_nt(const char16_t *path) {
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if (IsDirectorySymlink(path)) return sys_rmdir_nt(path);
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return DeleteFile(path) ? 0 : __winerr();
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}
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textwindows int sys_unlinkat_nt(int dirfd, const char *path, int flags) {
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uint16_t path16[PATH_MAX];
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if (__mkntpathat(dirfd, path, 0, path16) == -1) return -1;
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if (flags & AT_REMOVEDIR) {
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return sys_rmdir_nt(path16);
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} else {
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return sys_unlink_nt(path16);
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}
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}
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